George Brayton designed the first continuous ignition combustion engine to be commercially manufactured, a two-stroke engine that could be powered by either kerosene or gasoline. Patented in 1872 and sold as "Brayton's Ready Motor", it introduced the process of continuous combustion (now called the Brayton cycle) which formed the basis for development of the gas turbine engine. Brayton's machine made headlines in scientific journals of his time, but it was superceded within a few years by Nikolaus Otto's engine, a more efficient and far quieter design.